Free radical scavenging activity, total phenolic content, total antioxidant status, and total oxidant status of endemic Thermopsis turcica

Abstract

Thermopsis turcica, endemic to Turkey, is in danger of extinction. Studies on this species are very few due to the fact that it was only discovered in 1983 and grows in a small circumscribed area in Turkey. In this study, free radical scavenging activity, total phenolic content, total oxidant status (TOS), and total antioxidant status (TAS) of methanol (TTM) and acetone (TTA) extracts of T. turcica were measured spectroscopically. Free radical scavenging activity was determined according to the elimination of DPPH radicals and total phenol content was determined by the Folin-Ciocalteu reaction. Total oxidant status (TOS) and total antioxidant status (TAS) were measured with commercially available kits. Methanol and acetone extracts of T. turcica were found to have a specific radical scavenging effect. This effect was found to be related to the total phenolic content of the extracts. Since the TTA had a higher phenolic content than the methanol extract, it had a stronger radical scavenging effect. In addition, the total antioxidant capacity of the methanol extract was observed to be higher than that of its acetone counterpart. As a result, due to its antioxidative properties, T. turcica is thought to be a natural source of antioxidants.

Comparative study of biological activities and multicomponent pattern of two wild Turkish species: Asphodeline anatolica and Potentilla speciosa

“…The highest radical scavenging activities could be enlightened with the presence of higher phenols level in P. speciosa. These results are in good accordance with literature, which showed that there is a positive correlation between phenolics content and radical-scavenging activity 37,38 . From these results, phenolics and flavonoids could be considered ones of the main responsible for the hydrogendonating properties of tested extracts.…”

Comparative Evaluation of Antimicrobial and Anti-Inflammatory Activities of Ocimum sanctum, Phyllanthus niruri and Cadaba fruticosa: An in vitro Approach with Emphasis on Detection of their Bioactive Compounds Using GC-MS

“…From cancer to immune system decline to ageing, antioxidants as vitamins, carotenoids, phenolic compounds, all have disease preventive capacity (Aksoy et al, 2013). By improving or enhancing the proliferation of T-Lymphocyte cells, antioxidants help in fighting off bacterial, viral, fungal infections.…”

“…The process associated with the inflammatory response are complex but important aspects which have been exploited for screening of anti-inflammatory compound the role played by Reactive Oxygen Species (ROS) (Aksoy et al, 2013;Laupattarakasem et al, 2003). Discovery of potent Non-Steroidal Anti-Inflammatory Drugs (NSAIDs) with very low or no gastrointestinal (GI) side effects is area of significant interest (Grover et al, 2006).…”

Assessment of the antioxidant properties of the most common coffee brews available in the local markets of the western region of Saudi Arabia

“…The free radical scavenging activities of coffee depend on the structural conformation of antioxidant compounds and the ability of these compounds to lose hydrogen. The DPPH free radical, can receive easily an electron or hydrogen from antioxidant molecules to become a stable diamagnetic molecule (Aksoy et al, 2013).The DPPH radical scavenging percent of Nescafé red mug, Turkish coffee and Espresso were 45.6 %, 28.7 % and 23.6 %, respectively. The results showed that there were significant decreases (p<0.01) in scavenging activity in Turkish coffee and Espresso compared to Nescafé red mug (figure 3).…”